Official Fate/Grand Ordercomic handled by Riyo, distributed on the official F/GO website since August 2015.
Ostensibly, by the title, one would learn about the daunting mechanics and immersive world of F/GO with Fujimaru Ritsuka and friends... except this "annoying looking" female Ritsuka, otherwise known as Gudako, is a gacha junkie. Elsewhere, a similarly "annoying looking" male Gudao is adventuring and engaging in homoerotic shenanigans, though he isn't the only one in the world doing so.
A smash hit with fans, the original run from August to November 2015 would be followed up by More Learning with Manga! F/GO, lasting from December 2015 to July 2017, and by Even More Learning with Manga! F/GO since August 2017, each only occasionally as informative as it could be. Further popularized Riyo's style, and would inspire countless fanart with its scenarios and quotable scenes. Would also introduce a number of original characters, listed below.
